28
Mar
Basics of a Transformer

Basics of a Transformer

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Transformer The transformer is an instrument used to covert an AC at a certain voltage to an AC at a different voltage without change of frequency.  This consists of a closed laminated iron ...
29
Mar
Basics of meter & Measurements

Basics of meter & Measurements

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Moving coil galvanometer (MCG)The moving coil galvanometer was first invented by lord kelvin and later modified by D’arsonval. The MCG is used for measurement and detection of current and electric cha...
28
Mar
Clasp Right hand Rule

Clasp Right hand Rule

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Clasp Right hand RuleIf a conductor carrying current is held in the right hand, such that the thumb point in the direction of the current then the direction of bend of the rest of the fingers give...
28
Mar
Control Transformers

Control Transformers

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Control-TransformersWhat is control transformer?A control transformer also known as an industrial control transformer, or a control power transformer, or even a machine tool transformer is essentially...
29
Mar
Design Fundamentals of Transformers

Design Fundamentals of Transformers

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 The first stepFind core area of transformerCore Area = (1.152 * Sqr(VA) * 100) * 0.95  The second stepFind approx. core match the core areaThird stepFind turns per voltTPV = (1 / (4.44...
29
Mar
Electrical Voltage, Current & Power

Electrical Voltage, Current & Power

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What is Electrical Voltage?Voltage is also called potential (Potential is defined as the work required from some energy source in moving a unit positive charge between two points in an electric field)...
24
Mar
Frequencies

Frequencies

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FrequenciesElectric current is basically two types, Alternating Current denoted as AC and Direct current DC. One of the main parameter of AC is the frequencies.  The variation of current or vol...
28
Mar
IC 555 Timer Circuits and applications

IC 555 Timer Circuits and applications

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IC 555 BasicsIC 555 is one of the most commonly used timer circuit IC, hart of many hobby circuit and it have a widespread application in electronic gadgets and circuits. Here we  note ...
19
Mar
IP Ratings

IP Ratings

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IP RatingsIP rating is a system that classifying electrical equipment’s degree of protection from solid ojects and liquids. This is a recognized system in most of European and British standards. In...
29
Mar
NEMA Equivalent IP Rating

NEMA Equivalent IP Rating

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NEMA Equivalent IP Rating NEMA Rating                           &...
24
Mar
Oersted’s Experiment

Oersted’s Experiment

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Oersted’s ExperimentThe first experiment of magnetic fields setup by current through a conductor was conducted Oersted. He noticed that a pivoted magnetic needle, placed below a conductor carrying...
19
Mar
Ohms Law

Ohms Law

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Ohms LawThe potential difference between the ends of a conductor is directly proportional to the current through it, provided the temperature of the conductor is kept constant.If E is the potential ...
29
Mar
Operational Amplifier Basics, Circuit and applications IC-741

Operational Amplifier Basics, Circuit and applications IC-741

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...
24
Mar
Phase

Phase

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Phase In an AC wave theoretically voltage and current in an AC rise and fall simultaneously. But in actual case there is a time interval between voltage and currents. This is call phase differ...
25
Mar
Reactance

Reactance

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ReactanceReactance is the opposition inserts by a pure coil or a capacitor to the flow of alternating current through it. A pure coil or capacitor is one without any resistance in it. The oppositio...
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